Orange-derived and lemon-derived adsorbents with controlled grain for an efficient elimination of some cationic and anionic dyes
| Autor: | José M. Canal, Gemma Pascual, Josep García-Raurich, Marta Riba-Moliner |
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| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament de Ciència i Enginyeria de Materials, Universitat Politècnica de Catalunya. TECTEX - Grup de Recerca en Tecnologia Tèxtil |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Textile dyeing
Llimona Aigües residuals -- Depuració -- Decoloració Adsorbent Orange (colour) Tints i tenyit -- Química Oranges Adsorption Enginyeria química [Àrees temàtiques de la UPC] Taronges Dyes and dyeing--Chemistry Cationic dye Materials Chemistry Citrus peel Dyes and dyeing--Textile fibers Tints i tenyit -- Fibres tèxtils Enginyeria tèxtil::Fabricació tèxtil::Tintura [Àrees temàtiques de la UPC] Wastwater Chemistry Lemon Cationic polymerization Surfaces Coatings and Films Wastewater Coloring matter Colorants Anionic dye Sewage --Purification --Color removal Nuclear chemistry |
| Zdroj: | UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) |
| Popis: | Purpose This study aims to demonstrate that orange-derived and lemon-derived systems can be used in continuous processes as efficient adsorbents to the entrapment of some anionic and cationic dyes in the textile dyeing wastewater effluents. Design/methodology/approach Physically and chemically modified orange and lemon mesocarps are used as natural adsorbents for the cationic dyes Basic Blue 3, Basic Yellow 21, Basic Red 18 and Basic Green 4 and the anionic dyes Acid Blue 264, Acid Yellow 49 and Acid Red 337, all commonly used in the textile dyeing industry. Adsorption capacities of the orange-derived and lemon-derived adsorbents on the dyes are studied simulating a batch and continuous industrial processes. Findings Results demonstrate that treated orange mesocarp (orange-derived adsorbent) can adsorb up to 97% of cationic Basic Green 4 in 30 min, whereas the lemon mesocarp (lemon-derived adsorbent) can retain up to 88% within the same time. In the case of anionic, 91% Acid Blue 264 is adsorbed by the orange mesocarp in 15 min, whereas 92% is adsorbed by the lemon homologue within the same time. Originality/value As far as the authors know, physically and chemically modified orange and lemon mesocarps have not been used on the removal of cationic (Basic Blue 3, Basic Yellow 21, Basic Red 18 and Basic Green 4) and anioinic (Acid Blue 264, Acid Yellow 49 and Acid Red 337) dyes of textile dyeing wastewater industry. It is a costless and efficient treatment that supposes, on the one hand, an eco-friendly and feasible process for discolouration of wastewater and, on the other, a valorisation (upcycling) of orange and lemon peels, which are not currently used. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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